Heights in feet above Mean Lower Low Water (MLLW). Dots are NOAA's predicted highs and lows; the line between them is our interpolation. Shaded: night.
| Tide | Time | Height |
|---|---|---|
| High tide | 3:45 AM | 7.20 ft |
| Low tide | 9:25 AM | 2.46 ft |
| High tide | 3:18 PM | 9.61 ft |
| Low tide | 10:18 PM | -2.14 ft |
| Day | High tides | Low tides |
|---|---|---|
| Today Tue, Oct 27 | 3:45 AM 7.2 ft3:18 PM 9.6 ft | 9:25 AM 2.5 ft10:18 PM -2.1 ft |
| Tomorrow Wed, Oct 28 | 4:31 AM 7.0 ft3:58 PM 9.6 ft | 10:04 AM 3.0 ft11:04 PM -1.9 ft |
| Thu, Oct 29 | 5:21 AM 6.7 ft4:42 PM 9.4 ft | 10:46 AM 3.5 ft11:54 PM -1.4 ft |
| Fri, Oct 30 | 6:16 AM 6.3 ft5:32 PM 8.8 ft | 11:34 AM 4.1 ft |
| Sat, Oct 31 | 7:21 AM 5.9 ft6:31 PM 8.1 ft | 12:50 AM -0.6 ft12:33 PM 4.7 ft |
| Sun, Nov 1 | 7:36 AM 5.8 ft6:43 PM 7.3 ft | 1:53 AM 0.2 ft12:49 PM 5.0 ft |
| Mon, Nov 2 | 8:54 AM 6.0 ft8:11 PM 6.7 ft | 2:06 AM 0.9 ft2:29 PM 4.8 ft |
Orange: measured by NOAA's sensor, last 24 hours (6-minute data, preliminary). Dashed: predicted tide, through the next 24 hours. The prediction contains only the astronomical tide; wind, air pressure and river flow move the real water level away from it.
Chiachi Island (east side) is a subordinate station: NOAA computes its tides from Kodiak, Womens Bay with fixed time and height corrections.
On Tuesday, October 27, high tide at Chiachi Island (east side) is at 3:45 AM (7.2 ft) and 3:18 PM (9.6 ft); low tide is at 9:25 AM (2.5 ft) and 10:18 PM (-2.1 ft) (AKDT, heights above MLLW). The table above lists the next 7 days.
The highest predicted tide in the next 12 months is 10.1 ft on December 24, 2026 at 1:48 PM. The largest tides fall a day or two after a full or new moon, especially when the Moon is closest to Earth.
Yes — on 175 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -3.2 ft on July 5, 2027 at 10:25 AM. Minus tides expose the most shoreline, which is why tide-poolers look for them.
Station local time (AKDT at the time this page was built), with daylight saving time applied where the area observes it — the same convention as NOAA's own tide tables.
From NOAA CO-OPS, the U.S. government tide station network (tidesandcurrents.noaa.gov); the predictions are public domain. Chiachi Island (east side) is a subordinate station: NOAA derives its times and heights from the reference station Kodiak, Womens Bay with fixed corrections. The curve between highs and lows is our interpolation. This page is not for navigation.